Mercedes-Benz C-Class 180 / 200 Petrol Engine Replacement Compare Prices & Get Quotes

A replacement engine for a C180 or C200 petrol typically costs between £500 and £4,500 depending on the engine code and condition. Used M271 units start from £500-£1,500, reconditioned from £1,200-£2,800, and fully rebuilt M274 engines from £2,200-£4,500. A rebuilt M271.DE18 ML engine costs from £2,350, with reconditioned units from £1,800. Labour for supply & fit adds £500-£1,000.

• Used M271.820 (W204 C180 CGI): £550-£1,400
• Rebuilt M274.920 (W205 C200): £2,200-£4,200
• Rebuilt M254.915 (W206 C200): £2,800-£4,500

All C180 and C200 petrol engines use timing chains, not belts. The M271 (W203/W204) uses a single-row timing chain that is considered a wear item - failure typically occurs between 60,000-100,000 miles. The M274 (W205) and M254 (W206) also use timing chains. A rattling noise from the front of the engine on cold start is the classic warning sign for timing chain issues.

• All C180/C200 petrol engines: timing chain
• M271 chain stretch common at 60k-100k miles
• M274/M254 chains are more robust but require regular oil changes

On M271-equipped models (W203/W204, 2000-2013), the most common symptom is a rattling noise from the front of the engine on cold start. Other signs include the check engine light (P0017 code), rough idle, loss of power, extended cranking, and hard starting. The M271 engine is an interference design - if the timing chain breaks or slips, valves and pistons hit and the engine is effectively junk.

• Cold-start rattle from the front of the engine
• Check engine light with P0017 code
• Extended cranking and hard starting

It depends on the generation and condition. A W203 or W204 C180/C200 petrol is typically worth £2,500-£8,000 - a rebuilt M271 engine (£2,500-£4,200) can be a worthwhile investment if the car is in good condition. A W205 C180/C200 petrol is worth £6,000-£15,000 - a rebuilt M274 engine (£2,200-£4,500) is usually well within the car's value. For the M274, a specialist replacement with an upgraded rebuilt unit is almost always better value than attempting to rebuild the original engine due to the wrist pin design flaw.

• W203/W204 (2000-2013): rebuilt M271 viable for good condition cars
• W205 (2013-2021): rebuilt M274 usually justifies cost
• M274 wrist pin failure: replacement better than repair

The M271 is the original four-cylinder petrol family used in the W203 and W204 (2000-2013), available as supercharged ("Kompressor") and CGI turbocharged variants. The M274 is the turbocharged 1.6L/2.0L engine used in the W205 (2013-2021). The M254 is the 1.5L mild hybrid engine used in the W206 (2021-present) with 48V ISG technology.

• M271: 1.6-1.8L, supercharged or turbo, 143-184 hp, W203/W204 (2000-2013)
• M274: 1.6-2.0L, turbo, 156-211 hp, W205 (2013-2021)
• M254: 1.5L, MHEV turbo, 170-204 hp, W206 (2021-present)

Power loss in the C180 and C200 petrol depends on the engine. On M271 engines, timing chain stretch can cause cam timing drift, reducing power. On M274 engines, the wrist pin/piston seizure failure can cause misfires and power loss. On M254 engines, 48V system faults can cause reduced performance. A diagnostic check with Mercedes STAR or compatible equipment is essential to identify the exact cause.

• M271 timing chain stretch - power loss + rattling
• M274 wrist pin failure - misfires and power loss
• M254 48V system faults - reduced performance